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A mixture of sodium bromide and sodium iodide weighs 1.620 g. when treated with excess silver nitrate it yields a mixture of silver bromide and silver iodide which weighs 2.822 g. how many grams of sodium iodide was in the original mixture?
a 0.0355 g sample of an unknown molecular compound is dissolved in 1.000 g of liquid camphor at 200.0degc. upon cooling
Calculate the pH at each of the following points in the titration of 50.0 mL of a 0.50 M B(aq) with 0.50 M HCl(aq). (a) before addition of any HCl
3- A 498mL sample of laughing gas, N2O, is at 30 *C and 414 torr pressure (a) How many gas molecules are present. (b) How many atoms are there
a 20.0-rnl portion of pineapple juice was placed in a flask with 20 ml of 0.5m h2s04 then 2 g of potassium iodide and
At -13.0 °C (a common temperature for household freezers), what is the maximum mass of sucrose (C12H22O11) you can add to 3.00 kg of pure water and still have the solution freeze?
Calculate the value of the equilibrium constant at 298 K for the reaction: Sn(s) + Sn4+(aq) 2 Sn2+(aq).
calculate the molecular mass of a solute with 8.02 grams of solute in 861 grams of water lower the freezing point to -.430 degree Celsius
Separation of acetone from water by using MIBK - How much MIBK must be used if the final acetone concentration in the water-rich phase is 5 wt%?
Given a free energy change for a reaction of -0.125 kcal/mol, what is the equilibrium constant at 18 degrees C (r=8.314 J/mol*K)
a solution of sulphide ct 10-6 m is blended into a 0.4 m sodium chloride solution in a closed container. plot a log
10 g of methane (CH4) is combusted in a calorimeter that has an empty heat capacity of 18 J/°C. The calorimeter contained 150 g of water.
how much water would they have consumed? How many kJ would be required to bring it to body temperature? (We noted in class that the amount of heat necessary to melt snow is 6.01 kJ/mol)
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